03 Sierra Diesel

Printed From: the12volt.com
Forum Name: Car Security and Convenience
Forum Discription: Car Alarms, Keyless Entries, Remote Starters, Immobilizer Bypasses, Sensors, Door Locks, Window Modules, Heated Mirrors, Heated Seats, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=21824
Printed Date: July 07, 2025 at 11:31 AM

Topic: 03 Sierra Diesel

Posted By: allchromed01r1
Subject: 03 Sierra Diesel
Date Posted: November 23, 2003 at 9:15 AM

Anyone know where the glow plug wire is for a 2003 Sierra for the R/s??????

Replies:

Posted By: jrilla
Date Posted: November 23, 2003 at 10:27 AM

Glow-Plug wire is BLUE at the instrument cluster or PCM.

The PCM (Power Control Module) is in the left front of the engine compartment to the left of the fan shroud.

Be sure to test the wire, this is just a possibility.

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J Rilla

Owner/Installer

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